library;
import self as self;
import "dart:core" as core;

class A extends core::Object {
  constructor •(dynamic x) → dynamic
    : super core::Object::•()
    ;
}
class B extends self::A {
  synthetic constructor •() → self::B
    : invalid-initializer;
}
static method main() → dynamic {
  new self::B::•();
  invalid-expression;
}